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<p>通过键值对的形式将对象中的属性和方法连接起来</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> person = &#123;</span><br><span class="line">    name : <span class="string">&#x27;张三&#x27;</span>,</span><br><span class="line">    age : <span class="number">18</span>,</span><br><span class="line">    sayHi : <span class="keyword">function</span> (<span class="params"></span>) &#123;</span><br><span class="line">        <span class="title function_">alert</span>(<span class="string">&#x27;hello&#x27;</span>);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>1、先创建对象，然后添加属性和方法</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br></pre></td><td class="code"><pre><span class="line">数组字面量法</span><br><span class="line">&lt;script&gt;</span><br><span class="line">    <span class="keyword">var</span> hotel=&#123;&#125;</span><br><span class="line">    hotel.<span class="property">name</span>=<span class="string">&#x27;Quay&#x27;</span>;</span><br><span class="line">    hotel.<span class="property">rooms</span>=<span class="number">40</span>;</span><br><span class="line">    hotel.<span class="property">booked</span>=<span class="number">25</span>;</span><br><span class="line">    hotel.<span class="property">checkAvilablity</span>=<span class="keyword">function</span>(<span class="params"></span>)&#123;</span><br><span class="line">        <span class="keyword">return</span> <span class="variable language_">this</span>.<span class="property">rooms</span>-<span class="variable language_">this</span>.<span class="property">booked</span></span><br><span class="line">    &#125;</span><br><span class="line"><span class="title function_">alert</span>(hotel.<span class="property">name</span>)</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">对象构造函数法</span><br><span class="line">&lt;script&gt;</span><br><span class="line">    <span class="keyword">var</span> hotel=<span class="keyword">new</span> <span class="title class_">Object</span>()</span><br><span class="line">    hotel.<span class="property">name</span>=<span class="string">&#x27;Quay&#x27;</span>;</span><br><span class="line">    hotel.<span class="property">rooms</span>=<span class="number">40</span>;</span><br><span class="line">    hotel.<span class="property">booked</span>=<span class="number">25</span>;</span><br><span class="line">    hotel.<span class="property">checkAvilablity</span>=<span class="keyword">function</span>(<span class="params"></span>)&#123;</span><br><span class="line">        <span class="keyword">return</span> <span class="variable language_">this</span>.<span class="property">rooms</span>-<span class="variable language_">this</span>.<span class="property">booked</span></span><br><span class="line">    &#125;</span><br><span class="line">    <span class="title function_">alert</span>(hotel.<span class="property">name</span>)</span><br><span class="line">&lt;/script&gt;</span><br></pre></td></tr></table></figure>

<p>2、创建对象的同时创建属性和方法</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br></pre></td><td class="code"><pre><span class="line">字面量法</span><br><span class="line">&lt;script&gt;</span><br><span class="line">    var hotel=&#123;</span><br><span class="line">        name:&#x27;Quay&#x27;,</span><br><span class="line">        rooms:40,</span><br><span class="line">        booked:25,</span><br><span class="line">        checkAvilablity:function()&#123;</span><br><span class="line">        return this.rooms-this.booked</span><br><span class="line">    &#125;</span><br><span class="line">    &#125;</span><br><span class="line">alert(hotel.name)</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">构造函数法</span><br><span class="line">&lt;script&gt;</span><br><span class="line">function Hotel(name,rooms,booked)&#123;</span><br><span class="line">    this.name=name;</span><br><span class="line">    this.rooms=rooms;</span><br><span class="line">    this.booked=booked;</span><br><span class="line">    this.checkAvilablity=function()&#123;</span><br><span class="line">        return this.rooms-this.booked;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">var quayhotel=new Hotel(&#x27;Quay&#x27;,40,25);</span><br><span class="line">alert(quayhotel.name);</span><br><span class="line">var parkhotel =new Hotel(&#x27;Park&#x27;,120,77);</span><br><span class="line">alert(parkhotel.name);</span><br><span class="line">&lt;/script&gt;</span><br></pre></td></tr></table></figure>



<p>二.使用工厂模式创建对象</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">function</span> <span class="title function_">createPerson</span> (name, age) &#123;</span><br><span class="line">    <span class="comment">// 创建一个空对象</span></span><br><span class="line">    <span class="keyword">var</span> per = <span class="keyword">new</span> <span class="title class_">Object</span>();</span><br><span class="line">    per.<span class="property">name</span> = name;</span><br><span class="line">    per.<span class="property">age</span> = age;</span><br><span class="line">    per.<span class="property">sayHi</span> = <span class="keyword">function</span> (<span class="params"></span>) &#123;</span><br><span class="line">        <span class="title function_">alert</span>(<span class="string">&#x27;hello&#x27;</span>);</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// 把创建好的对象返回出去</span></span><br><span class="line">    <span class="keyword">return</span> per;</span><br><span class="line">&#125;</span><br><span class="line"><span class="keyword">var</span> person1 = <span class="title function_">createPerson</span>(<span class="string">&#x27;张三&#x27;</span>, <span class="number">18</span>)</span><br><span class="line"><span class="keyword">var</span> person2 = <span class="title function_">createPerson</span>(<span class="string">&#x27;李四&#x27;</span>, <span class="number">20</span>)</span><br></pre></td></tr></table></figure>

<p>通过创建一个空对象，在空对象中加入相关属性和属性值，最后记得返回出创建的对象</p>
<p>三.使用构造函数创建对象</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">function</span> <span class="title function_">CreatePerson</span> (name, age) &#123;</span><br><span class="line">   <span class="variable language_">this</span>.<span class="property">name</span> = name;</span><br><span class="line">   <span class="variable language_">this</span>.<span class="property">age</span> = age;</span><br><span class="line">   <span class="variable language_">this</span>.<span class="property">sayHi</span> = <span class="keyword">function</span> (<span class="params"></span>) &#123;</span><br><span class="line">       <span class="title function_">alert</span>(<span class="string">&#x27;hello&#x27;</span>);</span><br><span class="line">   &#125;</span><br><span class="line">&#125;</span><br><span class="line"><span class="keyword">var</span> person = <span class="keyword">new</span> <span class="title class_">CreatePerson</span>(<span class="string">&#x27;张三&#x27;</span>, <span class="number">18</span>);</span><br></pre></td></tr></table></figure>



<p>四.通过原型创建对象</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">function</span> <span class="title function_">CreatePerson</span> (name, age) &#123;</span><br><span class="line">    <span class="variable language_">this</span>.<span class="property">name</span>  = name;</span><br><span class="line">    <span class="variable language_">this</span>.<span class="property">age</span>  = age;</span><br><span class="line">    <span class="title class_">CreatePerson</span>.<span class="property"><span class="keyword">prototype</span></span>.<span class="property">sayHi</span>  = <span class="keyword">function</span> (<span class="params"></span>) &#123;</span><br><span class="line">        <span class="title function_">alert</span>(<span class="string">&#x27;hello&#x27;</span>);</span><br><span class="line">    &#125;;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>此方法就是为了改进对于相同的属性</p>
<p><a target="_blank" rel="noopener" href="https://www.jianshu.com/p/01f90948cfe7">https://www.jianshu.com/p/01f90948cfe7</a></p>
<p>创建函数</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">function</span> <span class="title function_">myFunction</span>(<span class="params">a,b</span>)&#123;</span><br><span class="line">	<span class="keyword">return</span> a+b;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">//等价于</span></span><br><span class="line"><span class="keyword">var</span> myFunction=<span class="keyword">new</span> <span class="title class_">Function</span>(<span class="string">&quot;a&quot;</span>,<span class="string">&quot;b&quot;</span>,<span class="string">&quot;return a+b&quot;</span>);</span><br></pre></td></tr></table></figure>

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